package com.huangliusong.threadcurrency.example.atomic;

import lombok.extern.slf4j.Slf4j;

import java.util.concurrent.CountDownLatch;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Semaphore;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.concurrent.atomic.AtomicLong;

/**
 * @author huangliusong
 * @since 2018/11/18
 * {@link ExecutorService}
 * {@link Semaphore}
 * {@link CountDownLatch}
 */
@Slf4j
public class AtomicExample2 {
    //请求总数
    public static int clientTotal=5000;
    //t
    public static int threadTotal=200;

    public static AtomicLong count=new AtomicLong(0);


    public static void main(String[] args) throws InterruptedException {
        ExecutorService executorService=Executors.newCachedThreadPool();
        final Semaphore semaphore=new Semaphore(threadTotal);
        final CountDownLatch countDownLatch=new CountDownLatch(clientTotal);
        for (int i=0;i<clientTotal;i++){
            executorService.execute(()->{
                try {
                    semaphore.acquire();
                    add();
                    semaphore.release();
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
                countDownLatch.countDown();
            });
        }
        countDownLatch.await();
        executorService.shutdown();
        log.info("count:{}",count.get());
    }

    private static  void add(){
        count.incrementAndGet();
        //count.getAndIncrement()
    }
}
